diff --git a/pom.xml b/pom.xml
index d920ee96..d2a68602 100644
--- a/pom.xml
+++ b/pom.xml
@@ -181,8 +181,8 @@
             <version>3.1</version>
             <extensions>true</extensions>
             <configuration>
-               <source>1.7</source>
-               <target>1.7</target>
+               <source>1.6</source>
+               <target>1.6</target>
             </configuration>
          </plugin>
          <plugin>
diff --git a/src/main/java/com/zaxxer/hikari/HikariConfig.java b/src/main/java/com/zaxxer/hikari/HikariConfig.java
index a60f98c6..c7d30b61 100644
--- a/src/main/java/com/zaxxer/hikari/HikariConfig.java
+++ b/src/main/java/com/zaxxer/hikari/HikariConfig.java
@@ -121,11 +121,13 @@ public final class HikariConfig implements HikariConfigMBean
             throw new IllegalArgumentException("Property file " + propertyFileName + " was not found.");
         }
 
-        try ( FileInputStream fis = new FileInputStream(propFile) )
+        try
         {
+        	FileInputStream fis = new FileInputStream(propFile);
             Properties props = new Properties();
             props.load(fis);
             PropertyBeanSetter.setTargetFromProperties(this, props);
+            fis.close();
         }
         catch (IOException io)
         {
@@ -419,7 +421,7 @@ public final class HikariConfig implements HikariConfigMBean
             int level = field.getInt(null);
             this.transactionIsolation = level;
         }
-        catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e)
+        catch (Exception e)
         {
             throw new IllegalArgumentException("Invalid transaction isolation value: " + isolationLevel);
         }
diff --git a/src/main/java/com/zaxxer/hikari/HikariPool.java b/src/main/java/com/zaxxer/hikari/HikariPool.java
index 5c089685..e5c6b74d 100644
--- a/src/main/java/com/zaxxer/hikari/HikariPool.java
+++ b/src/main/java/com/zaxxer/hikari/HikariPool.java
@@ -113,7 +113,7 @@ public final class HikariPool implements HikariPoolMBean
                 Class<?> clazz = this.getClass().getClassLoader().loadClass(configuration.getConnectionCustomizerClassName());
                 this.connectionCustomizer = (IConnectionCustomizer) clazz.newInstance();
             }
-            catch (ClassNotFoundException | InstantiationException | IllegalAccessException e)
+            catch (Exception e)
             {
                 throw new RuntimeException("Could not load connection customization class", e);
             }
@@ -398,10 +398,15 @@ public final class HikariPool implements HikariPoolMBean
                 if (initSql != null && initSql.length() > 0)
                 {
                     connection.setAutoCommit(true);
-                    try (Statement statement = connection.createStatement())
+                    Statement statement = connection.createStatement();
+                    try
                     {
                         statement.execute(initSql);
                     }
+                    finally
+                    {
+                    	statement.close();
+                    }
                 }
 
                 if (!shutdown)
@@ -462,11 +467,16 @@ public final class HikariPool implements HikariPoolMBean
                     return connection.isValid((int) TimeUnit.MILLISECONDS.toSeconds(timeoutMs));
                 }
     
-                try (Statement statement = connection.createStatement())
+                Statement statement = connection.createStatement();
+                try
                 {
                     statement.setQueryTimeout((int) TimeUnit.MILLISECONDS.toSeconds(timeoutMs));
                     statement.executeQuery(configuration.getConnectionTestQuery());
                 }
+                finally
+                {
+                	statement.close();
+                }
             }
             finally
             {
diff --git a/src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java b/src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java
index 75331544..09e4e6d9 100644
--- a/src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java
+++ b/src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java
@@ -72,7 +72,7 @@ public class ConcurrentBag<T extends com.zaxxer.hikari.util.ConcurrentBag.IBagMa
      */
     public ConcurrentBag()
     {
-        this.sharedList = new CopyOnWriteArraySet<>();
+        this.sharedList = new CopyOnWriteArraySet<T>();
         this.synchronizer = new Synchronizer();
         this.threadList = new ThreadLocal<LinkedList<T>>();
     }
@@ -92,7 +92,7 @@ public class ConcurrentBag<T extends com.zaxxer.hikari.util.ConcurrentBag.IBagMa
         LinkedList<T> list = threadList.get();
         if (list == null)
         {
-            list = new LinkedList<>();
+            list = new LinkedList<T>();
             threadList.set(list);
         }
 
@@ -193,7 +193,7 @@ public class ConcurrentBag<T extends com.zaxxer.hikari.util.ConcurrentBag.IBagMa
      */
     public List<T> values(int state)
     {
-        ArrayList<T> list = new ArrayList<>(sharedList.size());
+        ArrayList<T> list = new ArrayList<T>(sharedList.size());
         if (state == STATE_IN_USE || state == STATE_NOT_IN_USE)
         {
 	        for (T reference : sharedList)
diff --git a/src/test/java/com/zaxxer/hikari/TestFastStatementList.java b/src/test/java/com/zaxxer/hikari/TestFastStatementList.java
index 662888ac..4f3aac46 100644
--- a/src/test/java/com/zaxxer/hikari/TestFastStatementList.java
+++ b/src/test/java/com/zaxxer/hikari/TestFastStatementList.java
@@ -14,7 +14,7 @@ public class TestFastStatementList
     @Test
     public void testOverflow()
     {
-        ArrayList<Statement> verifyList = new ArrayList<>();
+        ArrayList<Statement> verifyList = new ArrayList<Statement>();
 
         FastStatementList list = new FastStatementList();
         for (int i = 0; i < 100; i++)
diff --git a/src/test/java/com/zaxxer/hikari/osgi/OSGiBundleTest.java b/src/test/java/com/zaxxer/hikari/osgi/OSGiBundleTest.java
index 8726ce4a..9612654b 100644
--- a/src/test/java/com/zaxxer/hikari/osgi/OSGiBundleTest.java
+++ b/src/test/java/com/zaxxer/hikari/osgi/OSGiBundleTest.java
@@ -24,9 +24,10 @@ import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleContext;
 
 import javax.inject.Inject;
+
 import java.io.File;
 
-import static junit.framework.Assert.assertNotNull;
+import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.ops4j.pax.exam.CoreOptions.*;